This front 47.1 GMC frame shows the problem encountered with front section of 2wd frames that do not have enough clearance for a front 4wd axle. The problem is solved by raising the frame higher above the axle for clearance, which may not be desirable for handling on the road.
One must determine whether raising the frame for adequate clearance or putting some 4wd frame under an older 2wd truck is less work.
The difference, of course, is in the factory dropped axle as demonstrated in this 55.2 two ton.
Ed
Last edited by EdPruss; 05/14/202212:32 PM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires. '47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle. '54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed. '55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
